Rokugan, which meant Emerald Land in the language of the Celestial Heavens, is the central location of the Legend of the Five Rings universe and its ruling Rokugani Empire's culture is similar to that of feudal Japan. Rokugan is sometimes referred to as the Emerald Empire. Rokugani society is also based on aspects of other Asian cultures such as China and India, as well as their magical systems and mythical beasts.

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At some point in one of the 4th edition books I read a power that essentially made one Samurai (PC for my uses) attack an ally thinking that the ally is his enemy.

I thought this was a Maho spell, but after going through all of them in the Core Rule book and Enemies of the Empire I have been unable to located it. I looked through the other Elemental spells and shadowlands powers and still could not find it.

If this power rings a bell for anyone I would appreciate the help, otherwise I guess I just might have dreamed it.

The closest I can find at a quick look is Hate's Heart (Maho level 3, page 272 of the core book). It's not quite as described, but if the Samurai is looking at an ally, then they'll be in a murderous rage with said ally.

I appreciate the help, I perhaps should have taken this down as I eventually solved my question. I was mistaken and it was not a Maho spell and the effect was not in the book but what I wanted to actually do with the spell.

I was thinking of a Tsuno Spell from Enemies of the Empire, Trapped in Yume-do. It would put the target in a dream state and they act in the real world while seeing something else. They would only realize it with a high Awareness roll even if they took damage. I plan on using this to make two PC's fight each other without knowing it.